Vapor oiling system.



E. M. CHMJF.

VAPOR OILING SYSTEM.

APPLIGATION FILED MAY 21. 1914.

Patented Jan.'12, 1915.

w W a m ERNEST NL MACHINE CO., OFgCINCINNATI, 0HIO,'A. CORPORATION 0F OHIO.

VAPOR ILING SYSTEM.

Specicatiomof Letters Patent.

Patented Janis, 1915.

Application led :Ma` 21, 1914. Serial No. 840,126.

To al?, 4whom t may concern.' 4

Be it known that I, ERNEST M. CHACE, a citizen of the United States, and, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and Improved Vapor Oiling System, of which the following specification is a full disclosure.

This invention .deals with a machine organization improved from the standpoint of the maintenance of an adequate lubrication of its various bearings; and it proposes a radical departure from thesystems of socalled stream lubrication that depend for conveying liquid lubricant upon a multiplicity of conduits or channels establishing a definite continuity from the source of oil to the various bearings.

Heretofore, various systems of so-ca'lledv stream lubrication havel been proposed,

but theyhave possessed disadvantages from two standpoints.` First;-` the vconstruction has necessarily been rather expensive by `reaf son of the more or less complex arr-angement of pipes and interconnecting channels; thereby increasing the cost of manufacture. Second; such systemshave. unavoidably involved elements or unreliabilitby reasonv of the prospect that one or more' of the pipes would sooner or later become obstructed and thus deprive. the bearings .dependent lupon it of an adequate supply of oily.4

Among other things, this invention contemplates an varrangement whereby the oil inthe form of a vapor or mist, instead ofy being conveyed 'entirely along, the conven@ tional restricted lines of travel inhefentin stream-lubrication systems, will now be unrestrictedly enabled to approach or envelop. the' bearings from a multiplicity of directions, and 'in lines of travel not necessarily dependent upon the preservation' of conf tinuityby means of pipes, and the like. By this invention there is thuscreated an essentially universal and quite reliable system of.

lubrication.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

To enable others skilled in tne art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure,

and in such drawings, like characters of reference denote corresponding parts througlr out all the views, ofwhichzf Figure l'is a side elevation of a milling machine of the overarm type;` parts: being broken away to show the internal construction thereof. p Fig. 2 is a side elevation of a simple construction typifying an atomizing means such as may be contemplated by thisv invention. Fig. 3 is a vertical longitudinal section through the atomizing nipple. Fig. f

4 is va horizontal section through line 4--4 of Fig. 3. Fig. 5 is-a plan of a spin-wheel forming a part of this nipple and Fig. 6l

is a plan of a multiple blade baiie that cooperates with the spin-wheel.

Continuing now by way of a more detailed description, A designates a frame for mounting various running elements; being instanced in this instance as the frame of a vertical spindle milling `'ymachine This frameis provided with a base portion 1 that serves as a foundation for the machine-tool,

\ and a closed portion 2 constituting a casing from the casing'portion's 2 and provides an overarm chamber 5 that merges with the chamber 3 aforesaid.

".A prime-mover P is journaled on the frame 'at any appropriate point thereof, and

it is suitably connected to a driving member p, here instanced as a shaft passing through and journaled in the wall of the casing and entering the chamber thereof, and at its other end journaled in the casing. That is to say,t h'e wall of the casing is provided at 6 with Va. bushinglsupport that receives a bush'- -ing 7 having an end` preferably projected clear of the wall, as shown, and providing one ormore oil apertures 8 of substantial so.y

. from, and may be journa-led at oneend in the bushing 11, and at the other end in a similar bushing 12 mounted in a lug 13 that ,d

projects `from the wall of the casing and which provides a drainport 14 leading from vthe inner end of the bushing l2, so that the end of the shaft s need not be exposed to.

the exterior of the casing'.

A speed-change mechanism inay "serve to transmit motion from the Vsli/aft p to the shaft s at the'predetermined rate. Thus, keyed to the shaft s may bea plurality of gears E1, E2 and E3 and a lcomplementary series of gears el, e2 and e3 may be splined to the shaft p so that any two oftthese gears may be intermeshed by shifting the latter in a well known manner. The lshaft s3 may also be journaled in the frame in parallelism with the shaft s, as by means of the bushing 15 which is secured in the hubportion 1G of the casing; which hubV is enabled to return oil to thecasing by` means of a duct 17. The other end of this shaft s3 is journaled in a portion of the overarm formed by the weblike part 18 providinga hub 19, so as toprovide space in oset'relation with the spindle lfor a bevelv gear si secured to the endofpthe shaft s3, and meshing with a bevel gear 85 secured t0 the spindle S. This spindle carries a collar`20v at its upper end xwhereby downward vmovement of the spindle is restrained and this collar forms a thrust-bearing adjacent surface 21 of the overarm and the upper end of the spindle is journaled against lateral movement by means of the bushing 22. Preferably, :the bearing surface 21 constitutes the bottom .of acircular basin 23 which is adapted to receive'oil through an enlarged uprising-port 24, as -will be described;q yA cap-plate 25 may rest over this basin so as to cover'the same and exclude dustftherefrom.V The lower end of the spindle provides a tapered yportion that fits in a tapered bushing 26 that in turn 1s mounted 1n asleeve 27 secured to the adjacent portion of the overarm. This portion provides a drainage surface 28 from which leads a port 29 registering with a similar port 30 in a sleeve 27, thereby admitting oil to the wearing surfaces. Secured to, or formed o n the lower end of the spindle may be an ordinary i oil thrower 31, which in the usual manner overrides the annular ridge .32, so as to preagaaaoaa vent oil from escaping and dripping down Vappropriate point is'located kan oil well or reservoir, which, preferably, is forgmed integrally'with the casing or frame, as indicated by W, and a power driven means is provided deriving oil from this well, and generating therefrom a vapor which isdelivered into the inclosed chamber of the casing and enabled to extend throughout vthe saine to envelop various wearing surfaces, permeating the bearings thereof, and condensing on the various exposed surfaces, and inltrating into and through the journals in said chamber. rlhe illustrated embodiment of this atomizerfcomprises a gear-pump 33, which is here shown located withinv the chamber 3, and bolted to the adjacent portion 34 of the wall, and having its operatfing shaft l35 projecting through said wall and carrying a pulley/36, which bymeans .of a belt 37, isjdriven from a pulley 38, deriving motion from the prime-mover. Secured toshaft 35 is a gear 39 that meshes with `a complementary gear 40 and thereby forms a continuously operating; oil pump of well known construction. `Aspipe 41 communicates with the inlet part of the pump and carries oil to Vit from thewell lV, and this oil is then discharged under pressure through the pipe 42 having its end terminating within the closed casing, and carrying aj suitableatomizer. is, shown best by Fig. 3 and embodies a nip- 'ple member 43,which is screw threaded within thel bore of the pipe 42, so as to be adjustable-thereon, and which terminates in a stud'or post forming a'spmdleor journal about which a spin-wheel 44 rotates. 'l his spin-wheel is shownby Fig. 5 and it is shaped somewhat like the wheel of a 4turbine sothat it may be rotated at a very high -speed by streams of oil directed thereto.

These streams pass along channels 45 formed by cutting slots in the nipple member 43,

and the size of such streams or jets is regulated by giving the nipple member 43 a conical shape at the extremity of the pipe 42, as `will be understood Yby Fig. 3. The fjets of oil are directed against the spinwheel and the latter rotates rapidly and breaks up these jets, and they are further broken by impinging against a fixed collar 446 secured by means vof the screw 47, and provided with a number of small radial openings that, in coperation with the spinwheel, have the effect of generating a very fine mistl from the oil. rl`his mist is enabled to be carried by air currents and by tions of the casing and thus enable the variward a drip ledge 49 and then drain downwardly onIto an underlying bearing or bushing, or oil duct. Likewise, the film of oil produced by surface condensation valong the area 50 will drain downwardly and enter the bushing 15 through the port 51. The mist will also rise through the ample port 24,

and b v condensing on the various surfaces with which it ultimately contacts, Will supplyv oil for the spindle' bearings. Ultimately, the condensed oil, by various ways, drains into the well W, so that the lubricating system is essentially continuous.

For the purpose of inspecting the operation of the various parts a cover plate 52 for the man hole 53 may be provided, preferably at a point in the frame remote from the atomizer, so that on observation of the extensibility of the vapor or oil mist may at any time be made and so that access may be had to the interior of the casing for the purpose of supplying oil thereto or the like.

Without further elaboration, the foregoing will so fully'reveal the gist of this invention that others can by applying current knowledge readily adapt it foi-'various applications without omitting certain features that, from the standpoint of the prior art,

fairly constitute essential characteristics of the generic vor specific aspects of this invention, and therefore such adaptations should and are intended to be comprehended within the meaning and range of equivalency `of the following claims.

Having thus revealed this invention, I claim as new and desire to secure by Letters Patent of the United States:

1. A self-lubricating machine-tool combining a hollow frame forming a closed casing; a power-driven shaft entering through the wall of said casing and journaledl there- 1n; a spindle emerging through the Wall of said casing and journaled therein;l means located and j ournaled Within said casing for transmitting motion from said powerdriven shaft to said spindle; a source of oil located within 'said casing; and means deriving oil from said source and deliverin it in the form of a mist into the chamber o said casing, whereby it may permeate -into bearings within said casing.

2. A self-lubricating mechanism combining a closed casing; a transmission .system journaled within said casing; a pipe; al pump adapted to force oil under pressurethrough said pipe; and a nozzle mounted on the end of said pipe within said closed casing, said nozzle providing a plurality of baiiie elements adapted to shatter the stream of oil and generate therefrom a fine mist capable of being carried by air currents throughout the interior of said casing.

3. A self-lubricating machine-tool combining a frame having one portion forming an inclosed casing and the other portion forming a base for the support of said frame; a prime-mover mounted on said frame; a member connected with said prime-mover and extending into said inclosing casing; an element extending through the wall of said casing; a transmission system journaled Within said inclosed casing to receive motion from said member and transmit the same to said element; said casing being provided with an oil-well and being constructed to return oil condensed in its interior to said well; and means deriving power from said primemover and adapted to generate a mist of oil and to deliver it into' the interior of said casing whereby it may extend and permeate the bearings in the interior of said casing.

4. A self-lubricating machine-tool combining a hollow frame forming a closed casing and provided with an oil-well; a powerdriven shaft entering throughthe wall of said casing and journaled therein; a spindle emerging through the wall of said casing and journaled therein; means located within said casing for transmitting motion from said power-driven shaft to said spindle; means deriving liquid oil from said Well, converting it into a mist and delivering it in that form into a chamber of said'casing, whereby it may permeate into bearings within said casing; and means for enabling oil condensed within said casing to return to said well.

5. A self-lubricating system combining a closed casing providing an oil-well and constructed to drain oil thereinto and also providing a bearing in an upper portion thereof and having a large passage leading through the adjacent material of the casing tothe wearing surface of said bearing; and' power-driven means located remotely from said bearing and adapted to derive oil from said well and convert it into a mist capable of extending through the intervening space to said bearing and to permeate it through said enlarged passage.

6. A self-lubricating machine-tool cornbining a hollow frame provided with a hol- .low overarm; a vertical spindlejournaled at oil-well and-being constructed to return oil condensed in its interior to said well; anda power-driven pump adapted to force 911 from said well into said 'atomizer under.

Y motion from said power-driven shaft to said spindle; a pump deriving oil from said source; s an atomizer supplied with oil by Y said pump .and adapted to convert and deliver it in the form of a mist into the cham-- ber of said casing, whereby it may permeate into bearings within saidcasing; means propelling said pump by power derived from said prime-mover; and means for returning to said receptacle oil condensed within said cas/ing. v

8. A self-lubricating system combining a closed casing having a drip-ledge and an oilconden'sing surface sloping downwardly to said drip-ledge; a. bearing located below said v drip -ledge to receive drippings of oil therefrom; and means for generating' and deli-vermg mto the interior of sald casmg an oilmist capable of extendingto said oilcondensing surface and forming 'a film of oil thereon. Y

9. A self-lubricating machine-tool combining a frame provided withy a closed hollowportion; a prime-mover mounted on said frame and connected with a member passing through the wall of said hollow-portion;

an element extending outwardly through 'the wallof said hollow-portion; a transmission system journaled within said hollow-portion to receive motion from said member and transmit the same to said element; an atomizer arranged in accessible relation with the interior of said hollow-portion;

l said frame being provided with an oil-well and 'being constructed to return oil condensed in the interior of said hollow-por tion to said well; and power-driven means enabling said atomizer to derive oil from l said well and deliver it in the form of a mist into the interior of sald closed hollowportion, whereby it may extend and-permeat-e the bearings in the interior of said casing. l

l0. A self-lubricating machine-tool com- -bining a hollow frame constituting a closed casing formed with an oil-well in its lower portion; a power-driven shaft entering through the Wall of said casing and journaled therein: a member emerging through the wall of said casing and journaled therein; means located and journaled within said casing for transmitting motion from said power-driven shaft to said member; an oilatomizer located within said casing and leriving oil from said source and projecting it in` the form of a mist into said casing, whereby it may permeate into bearings within said casing, said casing being constructed and arranged to drain excess condensed oil into said oil-well.

l1. A self-lubricating system combining a closedcasing having an opening in a wallportion thereof adaptedto receive a bushing; a bushing secured in said opening-and havingl` one end projecting clear of said casing into the interior thereof and having a perforation through the exposed end-portion; aE journal arranged in said bushing and adapted to receive lubricant through said perforation, and means for generating and deliveringan oil-mist into said closed casing whereby it may find access to said journal through saidr aperture.

l2. A selfelubricatng machine-tool combining a hollow frame provided with a hollow overarm; a vertical spindle journaled at the endof said overarm; a prime-mover mounted on the body-portion of said frame; a transmission system journaled within said frame to receive motion from said primemover and to transmit the same to said spindle; anatomizer within said frame: said frame forming a casing inclosing the above mentioned parts, and being provided with an oil-well and being constructed to return oil .condensed in its interior to said well; and power-driven means enabling said atomizer to derive oil from said well and deliver it in the form of a mist into the interior of said casing whereby it may extend therein and permeate the bearings in the interior of said casing. y t

ln Witness whereof, l hereunto subscribe my name, as attested by the two subscribing witnesses. `y

manner M. cir-mon. vl/l/*itnesses l PAUL D. S'rbrronn, Sor. EINsTnrN. 

